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bond

 [bond]
the linkage between atoms or radicals of a chemical compound, or the symbol representing this linkage and indicating the number and attachment of the valencies of an atom in constitutional formulas, represented by a pair of dots or a line between atoms, e.g., H—O—H, H—C≡C—H or H:O:H, H:C:::C:H.
coordinate covalent bond a covalent bond in which one of the bonded atoms furnishes both of the shared electrons.
covalent bond a chemical bond between two atoms or radicals formed by the sharing of a pair (single bond), two pairs (double bond), or three pairs of electrons (triple bond).
disulfide bond a strong covalent bond, —S—S—, important in linking polypeptide chains in proteins, the linkage arising as a result of the oxidation of the sulfhydryl (SH) groups of two molecules of cysteine.
high-energy phosphate bond an energy-rich phosphate linkage present in adenosine triphosphate (ATP), phosphocreatine, and certain other biological molecules. On hydrolysis at pH 7 it yields about 8000 calories per mole, in contrast to the 3000 calories yielded by phosphate esters. The bond stores energy that is used to drive biochemical processes, such as the synthesis of macromolecules, contraction of muscles, and the production of the electrical potentials for nerve conduction.
high-energy sulfur bond an energy-rich sulfur linkage, the most important of which occurs in the acetyl-CoA molecule, the main source of energy in fatty acid biosynthesis.
hydrogen bond a weak, primarily electrostatic, bond between a hydrogen atom bound to a highly electronegative element (such as oxygen or nitrogen) in a given molecule, or part of a molecule, and a second highly electronegative atom in another molecule or in a different part of the same molecule.
ionic bond a chemical bond in which electrons are transferred from one atom to another so that one bears a positive and the other a negative charge, the attraction between these opposite charges forming the bond.
peptide bond the —CO—NH— linkage formed between the carboxyl group of one amino acid and the amino group of another; it is an amide linkage joining amino acids to form peptides.

bond

(bond),
chemistry the force holding two neighboring atoms in place and resisting their separation; a bond is electrovalent if it consists of the attraction between oppositely charged groups, or covalent if it results from the sharing of one, two, or three pairs of electrons by the bonded atoms.
Chemistry A unit of chemical attraction; the ‘glue’ that maintains the molecules in their 3-D configuration—e.g., O2 has 2 bonds of affinity, which may be graphically represented by a short line or dash
Social medicine A binding force or influence; a cause of union; a uniting tie—e.g., bonds of fellowship

bond

(bond)
chemistry The force holding two neighboring atoms in place and resisting their separation; a bond is electrovalent if it consists of the attraction between oppositely charged groups, or covalent if it results from the sharing of one, two, or three pairs of electrons by the bonded atoms.

bond

  1. the force of mutual attraction that holds atoms together in molecules (see VAN DER WAALS INTERACTIONS and SULPHUR BRIDGE), such as high-energy bonds in ATP, weak hydrogen bonds in DNA, PEPTIDE BONDS and the disulphide bond of proteins.
  2. also called pair bond . The attraction which maintains a male/female relationship, for purposes of breeding, during the life cycle of some animals, mainly warmblooded vertebrates.

bond

(bond)
chemistry the force holding two neighboring atoms in place and resisting their separation.
References in periodicals archive ?
Andy Palmer, President and Chief Executive Officer, Aston Martin, said: "The connection between Aston Martin and James Bond is something of which we are very proud and it is remarkable that the DB5 remains the definitive James Bond car after so many years.
At the age of 23 she was discovered by James Bond director Terence Young and cast as a masseuse who worked at the Shrubland health club in Thunderball .
Sony had earlier introduced the 'Made for Bond' monicker for the Xperia Z5, in an advertisement featuring Moneypenny, picking up the phone for James Bond. While Daniel Craig doesn't feature in the ad, it implies that James Bond uses the recently launched Xperia Z5 smartphone in the movie.
"As a lifelong fan of James Bond I'm thrilled to be involved with this exclusive look at what promises to be 007's greatest adventure so far," says the presenter.
The character of James Bond was created by British author Ian Fleming in 1953.
A la par de las criticas, esta la creciente curiosidad de la gente por ver los sets del filme protagonizado por el unico James Bond rubio, Daniel Craig.
Many have seen the decision to turn down the James Bond production team as a missed opportunity to promote Wales, including Dame Rosemary's predecessor Lord Dafydd Elis-Thomas, who said he was "devastated that the most iconic location in Wales was not being made available to the internationally most attractive film".
Brittany, a book review editor and James Bond and spy specialist, compiles 14 essays on the influence of James Bond on film, television, literature, lifestyle, video games, and animation.
The first few chapters of the book start promisingly with Bond's character staying true to Ian Flemming's version as James Bond celebrates his 45th birthday at The Dorchester in London alone where he meets a beautiful woman and later test drives a Jenson Interceptor.
The archvillain from the James Bond films -- who's often seen stroking a white cat -- might be making a return to the big screen following a settlement announced Friday between studio MGM, production company Danjaq and the estate of Kevin McClory.
Summary: Idris Elba on Luther, those James Bond rumours and music.
7 -- (BNA) Organizers of the Oscar Film Awards in Hollywood, USA decided to organize the Oscars' distribution ceremony on 24th February 2013 to coincide with the 50th anniversary of the launching of the famous James Bond movie series.